Gray nail that is nail fungus, the treatment of nail fungus can be used externally, such as amorphophallus ointment, but the effect may not be ideal, it is recommended that patients follow the doctor’s instructions to take oral antifungal drugs and physical therapy to help the disease recovery. 1. external drugs: amorphophallus ointment, terbinafine hydrochloride cream and so on belong to the common treatment of onychomycosis ointment, has the effect of antifungal, it is recommended that patients with onychomycosis follow the doctor’s instructions for external use. However, the therapeutic effect of using ointment alone may not be ideal. 2. Oral medication: It is recommended that patients with severe onychomycosis be treated with oral medication under the guidance of a doctor, such as terbinafine, itraconazole and other antifungal medications, which are antiseptic and antibacterial, and have better efficacy in the treatment of onychomycosis. 3. Physical therapy: combined with fractional laser, Nd-YAG laser and so on to help sterilization, promote drug penetration. For patients who need to treat onychomycosis, it is recommended to go to regular hospitals, cooperate with doctors to carry out standardized treatment, and avoid unauthorized use of drugs.